look up phrasal verb ( see also ↑ look )
1 . if a situation is looking up, it is improving SYN improve , get better :
Now the summer’s here things are looking up!
2 . look something ↔ up if you look up information in a book, on a computer etc, you try to find it there:
Look the word up in your dictionary.
I’ll just look up the train times.
3 . look somebody ↔ up to visit someone you know, especially when you are in the place where they live for a different reason:
Don’t forget to look me up when you come to Atlanta.